Panes buying guides
Steel vs. fiberglass entry doors
Compare the complete entrance you would buy: its material, size, glass, frame, finish and hardware. This guide explains the tradeoffs and the details to check before ordering.
Explore entry-door designsThe short answer
Steel is worth considering for a smooth painted entrance; fiberglass offers smooth and woodgrain design options. Either can be part of an insulated door system. Choose using the available design, the complete configuration, its performance ratings, care requirements and quoted price.
Steel and fiberglass at a glance
Price and complete configuration
- Steel
- Compare the price of a complete steel entrance with the size, glass, frame, finish and hardware you need.
- Fiberglass
- Woodgrain surfaces, finishes, glass and entrance layouts affect a fiberglass quote. Compare the same specification before choosing by price.
Use an itemized quote. Material alone does not establish the final price.
Appearance and finish
- Steel
- Explore smooth painted surfaces and the panel designs available in the steel collection.
- Fiberglass
- Explore smooth and woodgrain surfaces, with paint or stain options depending on the selected design.
Check the actual design and finish options; request a sample when matching an existing color.
Weather exposure and damage
- Steel
- Inspect scratches, edges and damaged finishes. Exposed steel can corrode, and an impact can dent the skin.
- Fiberglass
- The fiberglass skin does not rust like steel, but the surface, finish, edges and other parts of the entrance can still be damaged.
Consider rain, sun and coastal exposure, then follow the care instructions for the complete assembly.
Energy performance
- Steel
- Insulated steel doors can perform well. Compare the ratings for the complete configuration, including its glass and frame.
- Fiberglass
- An insulated fiberglass door can also perform well. Its material name does not establish the rating of the complete entrance.
Compare certified U-factor and solar heat gain coefficient for the selected configuration; do not assume a material-wide winner.
Security and installation
- Steel
- Review the frame, anchoring, hinges, lock preparation, glass and compatible hardware along with the door slab.
- Fiberglass
- Review the same assembly details and confirm compatible locking hardware for the selected design.
A material label alone is not a forced-entry rating. Correct installation and the complete assembly matter.
Maintenance and warranty
- Steel
- Clean as directed, inspect the finish and address damage promptly. Check seals, the threshold and hardware operation.
- Fiberglass
- Clean as directed and maintain the painted or stained finish. Check seals, the threshold and hardware operation.
Both need care. Review the written warranty, finish coverage and any service-cost exclusions before ordering.
Which material fits your priorities?
Consider steel when
- You prefer a smooth painted entrance available in the steel collection.
- The steel configuration meets your design, performance and budget requirements.
- You are comfortable inspecting and maintaining the finish, particularly after scratches or impact.
Consider fiberglass when
- You want a woodgrain appearance or a fiberglass design offered in the collection.
- You prefer a nonmetallic door skin while still planning for finish and hardware maintenance.
- The fiberglass configuration meets your opening, glass, performance and budget requirements.
Compare the same entrance in both materials
A slab-only price is different from the price of an entrance with a frame, glass, sidelites, a transom and hardware. To compare steel and fiberglass fairly, use the same dimensions and include the items needed for installation.
Ask each quote to identify the frame and jamb depth, swing, glass design, finish, hardware, delivery and taxes. Check whether installation, removal and disposal are included or need a separate contractor quote. Use current configuration pricing rather than a generic price range.
What affects window and door pricingCompare ratings for the actual door configuration
U-factor describes heat transfer through a product; lower values indicate better insulation. Solar heat gain coefficient describes how much solar heat passes through it. Check the certified values for the configuration being quoted, including its glazing.
NFRC ratings provide an independent basis for comparison. ENERGY STAR certification applies to qualifying products, so confirm the selected model and configuration rather than assuming all steel or all fiberglass doors qualify. Material, glass, frame and installation should be considered together.
ENERGY STAR: understanding independent performance ratings · NFRC: residential product certificationOrder your door online and plan delivery
Panes manufactures and supplies custom entry doors with delivery throughout the continental United States and Canada. You can order outside our showroom markets. Select a supported design and configuration, review the itemized price, and confirm freight and taxes for your address.
US customers choose their own contractor for measurement and installation. Canadian customers can ask about local installation availability. Remote, restricted-access, oversized or specialty shipments may require review; contact Panes before ordering outside standard delivery coverage. Production and transit times are separate, so confirm the current estimate for your order.
Review delivery coverage and freight · Measure a complete entry-door system · Ask about your projectCommon questions
Are steel entry doors cheaper than fiberglass doors?
The answer depends on the designs and complete configurations being compared. Glass, finish, size, sidelites, frame and hardware can change the total. Compare current itemized quotes with the same scope, including delivery and any installation work.
Is fiberglass always more energy efficient than steel?
No material label establishes the performance of a complete door system. Compare the certified U-factor and solar heat gain coefficient for the exact configuration, including the glass and frame, and check the requirements for your project.
Which material is more secure?
Compare the complete assembly: slab, frame, hinges, glass, locks and anchoring. Ask for applicable performance information for the selected product. Neither the words steel nor fiberglass alone establish a forced-entry rating.
Can steel doors rust or fiberglass doors be damaged?
Exposed steel can corrode when its protective finish is damaged. A fiberglass skin does not rust like steel, but it and its finish can still suffer damage. Inspect the entire entrance and follow the care instructions for its surfaces, seals and hardware.
Can I order either material online and use my own installer?
Yes. Choose an available steel or fiberglass design and supported configuration, then have your installer confirm the measurements and installation details before ordering. Panes supplies doors throughout the continental United States and Canada; freight and destination eligibility are confirmed for the order.